Pachygrapsus marmoratus from turkish coasts of the black sea and the eastern mediterranean

The population genetic structure of Pachygrapsus marmoratus has been investigated along the Turkish coasts using cytochrome c oxidase subunit I gene (COI) sequences. Our findings revealed high genetic similarity between Black Sea / Turkish Straits System and Mediterranean populations of the species. On the other hand, the composition of mtDNA haplogroups in the haplotype network indicated a weak but discernable differentiation between populations.